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Communication

Iron-Based Layered Superconductor La[O_1-_xF_x]FeAs (x = 0.05−0.12) with T_c = 26 K

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Yoichi Kamihara,*^† Takumi Watanabe,^‡ Masahiro Hirano,^†^§ and Hideo Hosono^†^‡^§

ERATO-SORST, JST, Frontier Research Center, Tokyo Institute of Technology, Mail Box S2-13, Materials and Structures Laboratory, Tokyo Institute of Technology, Mail Box R3-1, and Frontier Research Center, Tokyo Institute of Technology, Mail Box S2-13, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan

J. Am. Chem. Soc., 2008, 130 (11), pp 3296–3297

DOI: 10.1021/ja800073m

Publication Date (Web): February 23, 2008

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

†

ERATO-SORST, JST.

‡

Materials and Structures Laboratory.

Frontier Research Center.

, hosono@msl.titech.ac.jp

Abstract

We report that a layered iron-based compound LaOFeAs undergoes superconducting transition under doping with F^- ions at the O^2- site. The transition temperature (T_c) exhibits a trapezoid shape dependence on the F^- content, with the highest T_c of 26 K at 11 atom %.

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Published In Issue March 19, 2008
Received January 9, 2008

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Communication

Iron-Based Layered Superconductor La[O_1-_xF_x]FeAs (x = 0.05−0.12) with T_c = 26 K